Looks like this one required only one story.
p://www.liveleak.com/view?i=192_1339571609
Besides, this idea that a 'minimum' number of stories is required is a red herring. So long as the upper block is not impacting precisely on matching structure below, that distance is moot - obviously other parts of the structure did not have a capacity to hold such a dynamic weight, even if it dropped only a few feet. Obviously. Because they weren't designed to do that.
And it is equally obvious that the internal floor systems would be also collapsing onto those below, regardless of the perimeter column misalignments discussed in this thread. Again the floor systems below were NOT designed to take such loads and would fail almost instantly.
But pretending that everything was lined up perfectly and squarely is the only way TS can keep his 'missing jolts' alive, so that's what he's peddling. It isn't even remotely convincing to me, it's actually rather silly, in 2012, to be maintaining this fiction.
Silly because the ship has sailed, the horse has left the barn, the 'missing jolt' theory sunk to the bottom of the swamp a long time ago. Tony's got one oar left and is paddling in circles thinking he's going somewhere.....